2047845 has 8 divisors (see below), whose sum is σ = 3276576. Its totient is φ = 1092176.

The previous prime is 2047841. The next prime is 2047879. The reversal of 2047845 is 5487402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2047845 - 2² = 2047841 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2047841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68247 + ... + 68276.

It is an arithmetic number, because the mean of its divisors is an integer number (409572).

2^2047845 is an apocalyptic number.

It is an amenable number.

2047845 is a deficient number, since it is larger than the sum of its proper divisors (1228731).

2047845 is a wasteful number, since it uses less digits than its factorization.

2047845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136531.

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 2047845 is about 1431.0293498038. The cubic root of 2047845 is about 126.9888803375.

The spelling of 2047845 in words is "two million, forty-seven thousand, eight hundred forty-five".